Monochamus galloprovincialis

Monochamus galloprovincialis

Monochamus galloprovincialis (longicornio del pino)

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Phenological cycle

Adults appear in spring feeding on the tender buds of the pines. Next they look for sick trees where they mate and after reproducing, the female realizes the putting on the bark practicing for it a small orifice. The hatching takes place at two weeks and the larva is introduced under the bark, where it digs food galleries, initially subcortical, to then penetrate the interior of the wood. In the month of September, after completing its development, pupa inside the galleries, where it will remain throughout the winter. At the end of spring-beginning of summer, adults begin to emerge to the outside through a hole that had previously been made and plugged with wood fibers in a larval stage.

Annual generations

1 (1 every 2 years in especially cold years)

Symptoms / Damage

It behaves as a secondary pest when it affects dead or weakened trees, so direct damages are usually mild in general.

Within these direct damages, the most important ones are made by the larvae when practicing galleries in the wood (usually in the shape of a U).

Adults cause slight defoliation by feeding on the shoots for a short period of time.

As indirect and more serious damage, it is a transmitter of the recently introduced in Spain, pine nematode (Bursaphelenchus xylophilus), which produces the dry matter of the specimen, and which can cause death in just three months.

Monochamus will attack weakened individuals earlier. Do not confuse the symptoms with scolitids (borers) whose exit holes are of smaller diameter (those of the longicorn of the pine have a diameter of 0.5 mm).

Control

The control must be preventive, the most important measures being to eliminate weakened trees and pruning remains, to avoid future attacks and the placement of pheromone traps for the mass capture of adults.

MOGA SE
Data sheet
Format
Septum
Duration
45 days / 6 weeks
Affects
Forest
Units
1u

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Monochamus galloprovincialis

Monochamus galloprovincialis (longicornio del pino)

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